Help identifying and fixing

[Greengrower]

Pics lower down.

What type of medium; soil or hydro?
Soil

What brand and type of soil?
Biobizz light mix 15L
Perlite 2L

Indoors or outdoors?

What strain?
G13 labs berry auto

How old are the plants?
8-9weeks old

What type of lights and how many watts?
Mars hydro 600w led (~237 actual watts)

How far from the lights?
~11 inches
What is your watering frequency and source of water?

Once every 3 days so basically water on say a Monday then Thursday then Sunday etc..

What, how much and when was it fed? NPK?
To start all water is left over night and is then Ph'd down to ~6.5
She has received some biobizz grow 4-3-6 and some calmag 1.8-0-0 in the past neither at full strength though. Past 4 waters or so it's been just plain tap water that's been left over night and then Ph'd down as I've been away and had someone tending the plants and kept it simple for them.

What is the medium/runoff pH and PPM if in hydro?
Unsure of the pH run off, will update with that tomorrow when she gets watered.

What are the temps and humidity in the room?
Temps~23c-26c
Humidity ~55-60 during the day can spike to 70-75 at night though.

What size pots?
20L but only in 17L of medium

Any bugs? Look real close.
Pretty sure there's none, could be wrong.

Any other pertinent info?
She's sharing a tent with two other autos of different strains, she's in a fabric pot, she's growing at a good rate I believe just these tips must mean something's up?
Some fan leaf stems have a purple/reddish tinge to them.
The picture that is the big fan leaf that's discoloured what is this also please?
If there's anything else I missed or any more pics you'd need to see then please let me know!
Thanks!

 

[Dewey Matter]

This is just my simple opinion: other than some over feeding (which can cascade into other issues...) nothing posted looks like a significant problem at this advanced growth stage. The bottom fade is normal & the purple stems are likely genetic, common in autos and harmless. Plants look decent to me, I'd just do your normal rigmarole, getting this as right as possible, and finish it out.

 

[Greengrower]

This is just my simple opinion: other than some over feeding (which can cascade into other issues...) nothing posted looks like a significant problem at this advanced growth stage. The bottom fade is normal & the purple stems are likely genetic, common in autos and harmless. Plants look decent to me, I'd just do your normal rigmarole, getting this as right as possible, and finish it out.

Would you recommend adding some nutes back in or just staying with the Ph'd water?

 

[Waira]

no bloom nutes at all? that's an amazing result considering,... But I can tell she's needing a PK boost, she's too green (too much N for this stage), and those symptoms on lowers is looking like early P defc. to me,... oddly bleached tips on tops, not sure, maybe some K defc? Might be magnified by the close light proximity, get those up to about 18"... overly intense lighting can trigger such problems, more tricky to spot because LED doesn't heat burn they way HID does,...

 

[Greengrower]

no bloom nutes at all? that's an amazing result considering,... But I can tell she's needing a PK boost, she's too green (too much N for this stage), and those symptoms on lowers is looking like early P defc. to me,... oddly bleached tips on tops, not sure, maybe some K defc? Might be magnified by the close light proximity, get those up to about 18"... overly intense lighting can trigger such problems, more tricky to spot because LED doesn't heat burn they way HID does,...

Thanks for the response Waira! Is there a type of pk booster you'd recommend for soil? What ratio is best or are they all the same? I'll raise the lights asap. Appreciate the help!

 

[Greengrower]

I do have biobizz bloom which is 2.0-7-4 or would that be too much nitrogen for her?

 

[Waira]

Bloom is OK, just mind what other inputs may have N in them,... Ideally, a no N, P-K booster (like CANNA PK 0-13-14, GH KoolBloom 0-10-10 for example) would be great for supplementing, some light dosing can blow the buds up even more...:smoking:

 

[Greengrower]

Bloom is OK, just mind what other inputs may have N in them,... Ideally, a no N, P-K booster (like CANNA PK 0-13-14, GH KoolBloom 0-10-10 for example) would be great for supplementing, some light dosing can blow the buds up even more...:smoking:

Okay if my bloom is okay I will go with that. What strength would you recommend please?
Thank you again Waira!

 

[Waira]

... depends on the concentration of it, the PK#'s,.. get me those and I can get more specific, but like for the PK 13-14, start at half strength for a couple rounds and see how she responds,.. ease into it!

 

[Greengrower]

... depends on the concentration of it, the PK#'s,.. get me those and I can get more specific, but like for the PK 13-14, start at half strength for a couple rounds and see how she responds,.. ease into it!

2.0-7-4 is the npk of my bloom, Im going to try quarter strength this morning and hope that's okay. Even though I'm doing this would still love your input please